Final answer:
The fan is the component of the vacuum cleaner that creates suction, powered by the motor, while the dust bag collects the debris. The commutator is part of the motor's electrical system.
Step-by-step explanation:
The component of the vacuum cleaner that does the suction is the fan. When the vacuum cleaner is turned on, the motor runs and powers the fan. The rotation of the fan blades creates a low-pressure area inside the vacuum cleaner. Air rushes into the vacuum to equalize the pressure, bringing with it dirt and debris which is then trapped in the dust bag. The commutator is part of the motor that helps in reversing the motor's electrical current and isn't directly involved in creating suction.